diff options
| -rw-r--r-- | core/opal.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/core/opal.c b/core/opal.c index 88ca2af4..7bc403c2 100644 --- a/core/opal.c +++ b/core/opal.c @@ -119,15 +119,44 @@ void __opal_register(uint64_t token, void *func, unsigned int nargs) opal_num_args[token] = nargs; } +/* + * add_opal_firmware_exports_node: adds properties to the device-tree which + * the OS will then change into sysfs nodes. + * The properties must be placed under /ibm,opal/firmware/exports. + * The new sysfs nodes are created under /opal/exports. + * To be correctly exported the properties must contain: + * name + * base memory location (u64) + * size (u64) + */ +static void add_opal_firmware_exports_node(struct dt_node *node) +{ + struct dt_node *exports = dt_new(node, "exports"); + uint64_t sym_start = (uint64_t)__sym_map_start; + uint64_t sym_size = (uint64_t)__sym_map_end - sym_start; + + dt_add_property_u64s(exports, "symbol-map", sym_start, sym_size); + dt_add_property_u64s(exports, "hdat-map", SPIRA_HEAP_BASE, + SPIRA_HEAP_SIZE); +} + static void add_opal_firmware_node(void) { struct dt_node *firmware = dt_new(opal_node, "firmware"); uint64_t sym_start = (uint64_t)__sym_map_start; uint64_t sym_size = (uint64_t)__sym_map_end - sym_start; + dt_add_property_string(firmware, "compatible", "ibm,opal-firmware"); dt_add_property_string(firmware, "name", "firmware"); dt_add_property_string(firmware, "version", version); + /* + * As previous OS versions use symbol-map located at + * /ibm,opal/firmware we will keep a copy of symbol-map here + * for backwards compatibility + */ dt_add_property_u64s(firmware, "symbol-map", sym_start, sym_size); + + add_opal_firmware_exports_node(firmware); } void add_opal_node(void) |
